Release v0.2.11

• methods install_packages and install_missing_packages of module weka.core.packages now allow a list of package names instead of tuples (name, version), assuming latest as version
• method get_jclass in module weka.core.classes can handle primitive classes now as well (eg int -> java.lang.Integer.TYPE)
• methods get_non_public_field and call_non_public_method in module weka.core.classes allow accessing private/protected fields and calling private/protected methods of Java objects, which avoids having to sub-class classes to get public access to them (NB: only works as long as the security manager allows that)
• added split_commandline method to module weka.core.classes, which splits a command-line into classname and option list tuple
• the Instances class (module: weka.core.dataset) now supports slicing
• added methods plot_xmlbif_graph and xmlbif_to_dot to module weka.plot.graph for plotting XML BIF graphs generated by BayesNet using GraphViz
• added method plot_graph to module weka.plot.graph to plot dot or XML BIF graphs